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won, a conversation about climate energy. burning fossil fuels release [indiscernible] they accepted the the fundamentals of climates science. today, things are different. skeptics are winning the comic communication battle even as temperatures rise and the intensity increases worldwide. over the next hour, we will talk about high school physics and chemistry and how science has committed in the public realm. we are joined by three distinguished scientists. michael mann is the author of "hockey and the current war." and a student from stanford university. >> i should mention that bill is here on very short notice. thank you for stepping in on such short notice you published the seminal work study on the hockey stick. tell us what the hockey stick is. >> it is not a sport. it is a curve that my co- authors and i published a few years ago. we had eight century of widespread thermometers around the world. we had to turn to what we call proxy data. it is to piece together how the clement buried in the more distant past. while it was relatively warm about a thousand years ago, the recent
. to some extent, we have gained economically through dirt cheap excess of energy. but it will be costly down the road. we still have time to avert a future where we leave our children and grandchildren a degraded planet, but there's not a whole lot of time. >> basically-judges has been -- basically, our idea has been let's make our children richer and they can figure it out here [laughter] my daughters may live to the end of this century. what are they looking at? >> there is still time to prevent -- most scientists classify it as what would constitute a very dangerous impact on the plan met -- on the planet. we can prevent that. we would have to prevent sued to concentration -- would have to prevent co2 concentration. next year, if we were sitting in this room, rudi 397. -- they would be about 397. you can get to 450 pretty soon if we do not make some dramatic changes. if you do the math -- my good friend has going around the country with the do the math tour. we can still prevent dangerous impacts on our climate. but we have to bring our fossil fuel emissions to repeat within a matter
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